forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
3.0 KiB
123 lines
3.0 KiB
/* |
|
* linux/include/kmsg_dump.h |
|
* |
|
* Copyright (C) 2009 Net Insight AB |
|
* |
|
* Author: Simon Kagstrom <[email protected]> |
|
* |
|
* This file is subject to the terms and conditions of the GNU General Public |
|
* License. See the file COPYING in the main directory of this archive |
|
* for more details. |
|
*/ |
|
#ifndef _LINUX_KMSG_DUMP_H |
|
#define _LINUX_KMSG_DUMP_H |
|
|
|
#include <linux/errno.h> |
|
#include <linux/list.h> |
|
|
|
/* |
|
* Keep this list arranged in rough order of priority. Anything listed after |
|
* KMSG_DUMP_OOPS will not be logged by default unless printk.always_kmsg_dump |
|
* is passed to the kernel. |
|
*/ |
|
enum kmsg_dump_reason { |
|
KMSG_DUMP_UNDEF, |
|
KMSG_DUMP_PANIC, |
|
KMSG_DUMP_OOPS, |
|
KMSG_DUMP_EMERG, |
|
KMSG_DUMP_SHUTDOWN, |
|
KMSG_DUMP_MAX |
|
}; |
|
|
|
/** |
|
* struct kmsg_dumper - kernel crash message dumper structure |
|
* @list: Entry in the dumper list (private) |
|
* @dump: Call into dumping code which will retrieve the data with |
|
* through the record iterator |
|
* @max_reason: filter for highest reason number that should be dumped |
|
* @registered: Flag that specifies if this is already registered |
|
*/ |
|
struct kmsg_dumper { |
|
struct list_head list; |
|
void (*dump)(struct kmsg_dumper *dumper, enum kmsg_dump_reason reason); |
|
enum kmsg_dump_reason max_reason; |
|
bool active; |
|
bool registered; |
|
|
|
/* private state of the kmsg iterator */ |
|
u32 cur_idx; |
|
u32 next_idx; |
|
u64 cur_seq; |
|
u64 next_seq; |
|
}; |
|
|
|
#ifdef CONFIG_PRINTK |
|
void kmsg_dump(enum kmsg_dump_reason reason); |
|
|
|
bool kmsg_dump_get_line_nolock(struct kmsg_dumper *dumper, bool syslog, |
|
char *line, size_t size, size_t *len); |
|
|
|
bool kmsg_dump_get_line(struct kmsg_dumper *dumper, bool syslog, |
|
char *line, size_t size, size_t *len); |
|
|
|
bool kmsg_dump_get_buffer(struct kmsg_dumper *dumper, bool syslog, |
|
char *buf, size_t size, size_t *len); |
|
|
|
void kmsg_dump_rewind_nolock(struct kmsg_dumper *dumper); |
|
|
|
void kmsg_dump_rewind(struct kmsg_dumper *dumper); |
|
|
|
int kmsg_dump_register(struct kmsg_dumper *dumper); |
|
|
|
int kmsg_dump_unregister(struct kmsg_dumper *dumper); |
|
|
|
const char *kmsg_dump_reason_str(enum kmsg_dump_reason reason); |
|
#else |
|
static inline void kmsg_dump(enum kmsg_dump_reason reason) |
|
{ |
|
} |
|
|
|
static inline bool kmsg_dump_get_line_nolock(struct kmsg_dumper *dumper, |
|
bool syslog, const char *line, |
|
size_t size, size_t *len) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline bool kmsg_dump_get_line(struct kmsg_dumper *dumper, bool syslog, |
|
const char *line, size_t size, size_t *len) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline bool kmsg_dump_get_buffer(struct kmsg_dumper *dumper, bool syslog, |
|
char *buf, size_t size, size_t *len) |
|
{ |
|
return false; |
|
} |
|
|
|
static inline void kmsg_dump_rewind_nolock(struct kmsg_dumper *dumper) |
|
{ |
|
} |
|
|
|
static inline void kmsg_dump_rewind(struct kmsg_dumper *dumper) |
|
{ |
|
} |
|
|
|
static inline int kmsg_dump_register(struct kmsg_dumper *dumper) |
|
{ |
|
return -EINVAL; |
|
} |
|
|
|
static inline int kmsg_dump_unregister(struct kmsg_dumper *dumper) |
|
{ |
|
return -EINVAL; |
|
} |
|
|
|
static inline const char *kmsg_dump_reason_str(enum kmsg_dump_reason reason) |
|
{ |
|
return "Disabled"; |
|
} |
|
#endif |
|
|
|
#endif /* _LINUX_KMSG_DUMP_H */
|
|
|